Fig. 7

Von Kossa staining of bone tissue and hard tissue sections of the prosthesis (100x, bar = 100 μm). a Bone formation around the prosthesis in the control group was reticulated(n = 10). b Bone formation in the chitosan group was continuous(n = 10). c There was a statistically significant difference in the amount and area of calcium salt deposition between the two groups (p < 0.05)